treewide: remove references to CREDITS ...

The CREDITS file was removed from barebox in 2015 by commit 6570288f2d97
("Remove the CREDITS file"). Remove references to it from several files.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: use NULL instead of never-read argument ...

len isn't read afterward and of_get_property accepts NULL as third
argument, so do it.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: set ret for error cases ...

looks like it was forgotten.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: fix typo when writing #address-cells ...

On > 4 GiB eMMC devices, barebox writes a 32-bit address and a 64-bit
size into the partition reg property, because #address-cells is
accidentally written as '#addres-cells'. This causes a fallback to
32-bit address size. Fix the typo and thereby of_partition_fixup for
64-bit partitions.

Fixes: a2fa18f9f483 ("mtd: of: Make used partition binding configurable")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: mtd: partition: Use reproducible node names for fixup ...

The full names of device nodes are not as stable as we like them
to be. Lately the leading zeroes in the i.MX6 device trees were
removed which led to the result that we can no longer find the
partition nodes in the to be fixed tree. Use reproducible names
to overcome this.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: of: only add partition layout param when GLOBAL support is enabled ...

Fixes: a2fa18f9f483 (mtd: of: Make used partition binding configurable)
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partitions: flag partitions from a partition table ...

We are going to call the of_partition_fixup for regular block
devices like MMC/SD aswell. Add a flag to partitions indicating
they are instanciated from a on-disk partition table so that they
won't be added as device tree partitions during fixup.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: only create partition node when partitions exist ...

With the legacy partition binding we did not modify the device
node when no partition exist, but with the new binding we would
create the "partitions" node with compatible = "fixed-partitions".
Prevent that by catching the absence of partitions early.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: Make partition fixup independent from mtd devices ...

The of partition parser is not only used for mtd device, but also
for regular block devices, so make the of_mtd_fixup code independent
of mtd devices also, so that other devices can be fixed up, too.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: support 64bit partition sizes ...

Do not assume that #address-cells and #size-cells are
both 1. Parse them appropriately to support devices
> 4GuB.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: of: Make used partition binding configurable ...

So far we used the legacy partition binding when fixing up the
mtd partition nodes. Change this to default to the new binding
with a "partitions" submode. Make this behaviour configurable
though: This creates a new of_binding device variable for
mtd devices. This can be set to:

- "new": Use the new partition binding (default)
- "legacy": Use the old partition binding
- "donttouch": Do not touch the partition node

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: Move of_mtd_fixup to drivers/of/ ...

Move the fixup code where the parser code is already.
Since the code will not only be used for mtd in the future
drivers/of/ is a better place than drivers/mtd/.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partitions: force "partitions" subnode ...

The binding states that a subnode containing partition subnodes
should have the name "partitions". Enforce this so that we do not
parse nodes with other names which may have partition descriptions
for other disks.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partitions: Support new binding ...

The new binding recommends to put the partitions into a subnode
with compatible "fixed-partitions". Add support for this binding.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

string: Fix (v)asprintf prototypes ...

Our asprintf and vasprintf have different prototypes than the glibc
functions. This causes trouble when we want to share barebox code
with userspace code. Change the prototypes for (v)asprintf to match
the glibc prototypes. Since the current (v)asprintf are convenient
to use change the existing functions to b(v)asprintf.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

cdev: Add function to find cdev by device_node ...

This adds a device_node member to struct cdev and a function
to find a cdev by device_node.
This also removes the setting of cdev->dev->device_node in
the of partition parser. We must not set the device since it
may not refer to a partition but to a whole device with partitions.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of_partition: devfs_add_partition returns an error pointer ...

Check for the return value of devfs_add_partition with IS_ERR.
Otherwise we dereference a NULL pointer when devfs_add_partition
fails.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/of'

mtd: nand: create bb devices automatically ...

When a mtd device can have bad blocks we want to create a
bb device, so do this automatically. This allows us to
drop bb device creation from the environment.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: set device_node of the newly created partition ...

So that we can find the devicenode for a partition.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: Check for valid partition name ...

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partition: check for valid node ...

So that users can call the of partition parsers without checking
if they are probed from the devicetree.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partitions: factor out function to parse a single partition ...

To make it usable for other code.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

OF: base: convert and remove device_node_for_nach_child ...

Remove device_node_for_nach_child and convert users to corresponding
imported OF API functions.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partitions: create bb device for nand flashes ...

For nand flashes automatically create a bb device for each partion.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: partitions: pass struct cdev as argument ...

pass a struct cdev instead of the cdev name to of_parse_partitions.
This is available to the caller anyway and makes it easier to use
additional stuff from the cdev (like knowing whether it's a mtd
device).

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

of: Add devicetree partition parsing ...

Helper code to probe mtd partitions from the devicetree.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>